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Question 1 of 20
1. Question
A 21 y/o sexually active woman came to your clinic with a 2day history of urinary frequency with urgency dysuria and evidence of blood. She had no prior urinary tract infection. Laboratory test showed slightly elevated white blood cell count of 10,500/uL. Urinalysis revealed innumerable white cells. Cultures yielded >105 CFU of a lactose fermenting gram negative rod. What is the most probable etiologic agent?
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Question 2 of 20
2. Question
The following pertains to Coxiella burnetii, except:
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Question 3 of 20
3. Question
A 45 y/o man presents to the ER with fever, chills, nausea and myalgias. Two days PTC, patient ate raw oysters at a popular seafood restaurant. Upon admission, he was febrile and had hemorrhagic, fluid-filled bullous lesions in his left leg. The patient had a history of DM, chronic Hepatitis B, and heavy alcohol consumption. The patient, who had a temperature of 39OC, was admitted to the ICU for presumed sepsis and treatment was begun. Blood cultures drawn on admission and fluid from the bullous leg wound revealed a curved, gram negative rod isolate. On the 3rd hospital day, DIC developed and patient died. What is the most probable etiologic agent in this case?
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Question 4 of 20
4. Question
Intranuclear inclusions were found in epithelial cells from the urine of an infant who was admitted with symptoms of low birth weight, jaundice and neurologic defects. The most likely clinical diagnosis in this case would be infection from
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Question 5 of 20
5. Question
An infant was hospitalized with a severe, tender erythema that started on the face and then spread to the trunk and extremities. The child’s epidermis was loose, and large areas of skin could be peeled off, leaving the sensitive underlying dermis exposed. The condition described is most consistent with a clinical syndrome associated with which organism?
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Question 6 of 20
6. Question
A 40 y/o man presents to the Emergency Department with nonproductive cough and rales on physical examination. Chest-PA suggests bronchopneumonia. Several days PTA, had an onset of fever, severe frontal headache and myalgia. This patient previously worked as a zoo janitor. If a tissue biopsy was done on this patient and revealed Levinthal-Cole-Lillie bodies on Giemsa stain, which of the following organism is the most likely cause of his condition?
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Question 7 of 20
7. Question
What is the unit of structure of fungi?
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Question 8 of 20
8. Question
In the Philippines, thorough cooking of kuhol (Pila luzonica) before serving as an exotic native delicacy prevents infection from this parasite. Heavy infection may result to mild ulceration of the intestinal mucosa producing bloody diarrhea and abdominal pain. The life- cycle of this trematode involves 2 snail intermediate hosts. What parasite is most likely described?
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Question 9 of 20
9. Question
Educating the population to undertake activities necessary to avert transmission of certain diseases has an important role in prevention strategies most especially in certain diseases with high-endemicity. Among the following provinces, Schistosoma japonicum is highly endemic, except in:
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Question 10 of 20
10. Question
Steam under pressure is the most dependable moist heat method of sterilization for both hospital clinical laboratories and research facilities. What is the required temperature and period of time necessary for the material to be sterilized to remain in contact with saturated steam in an autoclave?
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Question 11 of 20
11. Question
Which of the following statements regarding T cells is true?
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Question 12 of 20
12. Question
One of these pairs do not match:
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Question 13 of 20
13. Question
During an emergency appendectomy, a surgical resident sustains an injury from contaminated hollow-bore needle with spontaneous bleeding. Which blood-borne organism is most likely to be transmitted, assuming that the patient was infected with all of them?
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Question 14 of 20
14. Question
An 80-year-old woman who lives in a nursing home and who just finished a 10-day course of antibiotics has abdominal pain and profuse diarrhea. Her stool is tested and comes back positive for C. difficile. What is the most appropriate initial management?
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Question 15 of 20
15. Question
Which of the following is associated with megaloblastic anemia?
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Question 16 of 20
16. Question
An injured firefighter developed a wound infection, and culture of the site indicates a gram-negative rod that is oxidized-positive and produces bluish-green pigment. The organism was relatively resistant to antibiotics but susceptible to ticarcillin and tobramycin. The organism is most likely
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Question 17 of 20
17. Question
A 3-yearr-old child presents at the physician’s office with the symptoms of coryza, conjunctivitis, low-grade fever, and Koplik spots. The causative agent of this disease belongs to which group of viruses?
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Question 18 of 20
18. Question
Viruses have various ways of entering the human body and producing disease. Which of the following descriptions accurately describe the route and mechanism for the virus indicated?
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Question 19 of 20
19. Question
A 25-year-old gay with AIDS has malabsorption, chronic abdominal pain, low-grade fever and non-bloody diarrhea. What is an expected finding in fecal smears?
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Question 20 of 20
20. Question
A newborn boy appears to be lethargic and septic. A spinal tap was performed and a Gram stain revealed gm+ bacilli. Cultures of the spinal fluid on sheep blood agar plates at a temperature of 22-250 degree C, yielded catalase+ hemolytic rods that had tumbling motion. Penicillin cleared the infection. The most likely organism is:
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